$(function () {
    let clientHeight = document.documentElement.clientHeight;
    $(".bullet_class").height(clientHeight);

    $(".bulletBtn,.btnRet").click(function () {
        debugger
        var display = $('.bullet_class').css('display');
        if (display == 'none') {
            $('.bullet_class').show();
        }else{
            $('.bullet_class').hide();
        }

    });


});